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<blockquote data-quote="joshua1784" data-source="post: 5759621" data-attributes="member: 608658">heres what pete had to say about enclosure-//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifI&#039;ve just looked over your form and an asymmetric wall shouldn&#039;t be a&amp;gt;&nbsp; &nbsp;&nbsp; problem.&nbsp; The problem (challenge, rather,) is going to be the alignment, itself.&amp;gt;&nbsp; &nbsp; &nbsp; Your RE SE15s have an exceptionally low efficiency bandwidth product (~40)&amp;gt;&nbsp; &nbsp;&nbsp; which means that they&#039;ll require quite a bit of help in terms of mechanical&amp;gt;&nbsp; &nbsp;&nbsp; resistance which we&#039;ll have to achieve either through some degree of&amp;gt;&nbsp; &nbsp;&nbsp; acoustic suspension or a high degree of resonant impedance (that is, if&amp;gt;&nbsp; &nbsp;&nbsp; we&#039;re going to work around the inherently large spike along the woofer&#039;s&amp;gt;&nbsp; &nbsp;&nbsp; upper response region and then a lack of bass along the woofer&#039;s lower&amp;gt;&nbsp; &nbsp;&nbsp; response region.)&nbsp; By the virtue of the T/S parameters, these drivers were aimed&amp;gt;&nbsp; &nbsp;&nbsp; toward use in sealed enclosures.&nbsp; Not to worry; I know these like the back of my&amp;gt;&nbsp; &nbsp;&nbsp; hand and we can certainly do better than sealed, especially for what you&#039;d&amp;gt;&nbsp; &nbsp;&nbsp; like them to do.&nbsp; Let me know if you have any further concerns or anything else&amp;gt;&nbsp; &nbsp;&nbsp; that you&#039;d like to interject.&nbsp; Aside from that, everything looks quite&amp;gt;&nbsp; &nbsp;&nbsp; doable to me.&nbsp; Let me know if you&#039;d like to get started so that I can assign&amp;gt;&nbsp; &nbsp;&nbsp; you a case number and put you in line for a set of blueprints.&amp;gt;&amp;gt;&nbsp; &nbsp;&nbsp; Petealso whe he sent the blueprints, heres&#039; what he had to say-//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifWhat you have here is an offset transmission line design in two sections that are to be stacked one on top of another for ease of assembly and install.&nbsp; As you&#039;ve requested the vents (mouths of the transmission lines) fire along the driver side with the woofers as far toward the passenger side as was feasible given this particular style alignment.&nbsp; According to your listening preferences / output goals, this is a predominantly SPL design and aligned for good performance with most Rap music.&nbsp; Expect peak efficiency of 94dB (1W @ headrest) around 53Hz for SPL purposes, otherwise, your effective in-cabin response (and the enclosure&#039;s operating range) spans from ~35Hz to 90Hz.&nbsp; For the woofers&#039; protection, set your subsonic filter around 32Hz.Pete</blockquote>

[QUOTE="joshua1784, post: 5759621, member: 608658"] heres what pete had to say about enclosure-[IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] I've just looked over your form and an asymmetric wall shouldn't be a > problem. The problem (challenge, rather,) is going to be the alignment, itself. > Your RE SE15s have an exceptionally low efficiency bandwidth product (~40) > which means that they'll require quite a bit of help in terms of mechanical > resistance which we'll have to achieve either through some degree of > acoustic suspension or a high degree of resonant impedance (that is, if > we're going to work around the inherently large spike along the woofer's > upper response region and then a lack of bass along the woofer's lower > response region.) By the virtue of the T/S parameters, these drivers were aimed > toward use in sealed enclosures. Not to worry; I know these like the back of my > hand and we can certainly do better than sealed, especially for what you'd > like them to do. Let me know if you have any further concerns or anything else > that you'd like to interject. Aside from that, everything looks quite > doable to me. Let me know if you'd like to get started so that I can assign > you a case number and put you in line for a set of blueprints. > > Pete also whe he sent the blueprints, heres' what he had to say-[IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] What you have here is an offset transmission line design in two sections that are to be stacked one on top of another for ease of assembly and install. As you've requested the vents (mouths of the transmission lines) fire along the driver side with the woofers as far toward the passenger side as was feasible given this particular style alignment. According to your listening preferences / output goals, this is a predominantly SPL design and aligned for good performance with most Rap music. Expect peak efficiency of 94dB (1W @ headrest) around 53Hz for SPL purposes, otherwise, your effective in-cabin response (and the enclosure's operating range) spans from ~35Hz to 90Hz. For the woofers' protection, set your subsonic filter around 32Hz. Pete [/QUOTE]

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